Tooth-brush.



PATBNTED FEB. 19, 1907.

E. PBNKALA.

TOOTH BRUSH.

APPLICATION npnp MAR. 26, 1900.

M j? 5 an Jim Illltlllllll i'inessw: y W4 7% NITED STATES EDUABDPiiNKALA, OF ZAGRAB, AUSTRIA-HUNGARY.

TOOTH- Specification of Letters Patent.

BRUSH.

Application filed March 26, 1906, Serial No. 308,084.

To all whom it may concern.-

Be it known that I, EDUARD'PENKALA, a citizen of the Kingdomof Hungary,and residing at Zagrab, Croatia, Kingdom of Hungary, haveinventedcertain new and useful Improvements in Tooth-Brushes, of whichthe following is a description. I

The present invention relates to rotary tooth-brushes, and consists ofthe details of construction hereinafter set forth and particularlypointed out in the claims.

In order to render the present specification easilyintelligible,reference is had to the accompanying drawings, in which similar numeralsof reference denote similar parts throughout the several view.

Figure 1 is a sectional front elevation of the brush; Fig. 2, a sideelevation of the same; Fig. 3, a sectional side elevation, and Fig. 4 aplan view. The sections in Figs. 1 and 3 are taken, respectively, onlines A B and'C D of Fig. 4.

The tooth-brush 1 is of the cylindrical pattern, and the bristles aremounted on the end of the spindle 2, having a central reduced part 3 forthe purpose hereinafter set forth. The lower end of the spindle is boredout conically and thus pivotally supported on an adjustable. pointedscrew 4, mounted in the bridge or bow 12 of a double-arm spring 5 6. Thearms 5 6 of the spring extend upwardly and outwardly and are provided attheir upper ends with sector-arms 7 and 8, extending toward each otherand engaging by friction, one at each side of the reduced part 3 of thebrush-spindle. The ends of each of the sector-arms are slightly bentinwardly, as at 9 and 10, to form stops for the outward stroke of thespring, while the latter is double-acting in that the said arms 5 and 6may be pressed together, as shown in dotted lines in Fig. 1 in the firstplace, and that, secondly, the spring has a torsional action, tending tohold the sector-arms closely against the reduced part 3 of thebrush-spindle. The spindle is inclosed in a sleeve 11, which at'its IPatented Feb. 19, 1907.

lower end closes against the inner surface of the brid e 12, at itscenter is provided with a practice 1y spherical enlargement 14 toreceive the sector-arms 7 8, and at its upper part is widened into ashell or partial covering for the rotary brush.

The device is manipulated by pressing the arms 5 and 6 toward each otherand then releasing them, whereby the brush will be r0- tated first inone direction by the compression of the spring and then in the other bythe recovery of the same.

I claim as my invention- 1. In combination, a spring havingoppositely-extending sector-arms, and a circular brush having itsspindle rotatably held between said sector-arms.

2. In combination, a spring having 1 a bridge and oppositely-extendingsector-arms, and a rotary brush having its spindle jour naled in saidbridge andlying between said arms.

' 3. In combination, a spring having a bridge and oppositely-extendingsector-arms, a rotary brush having its spindle j ournaled in said bridgeand lying between said arms and a sleeve inclosing the spindle andhaving a portion to partially inclose the brush.

In testimony whereof I aflix my signature in the presence of twowitnesses.

' EDUARD PENKALA. Witnesses:

' JosEF WIEKMANN,

P. E. MALLETT.

